William Henry Pierce (1856-1948), also known as W. H. Pierce, was a Canadian First Nations missionary for the Methodist church and a member of the Tsimshian nation in northwestern British Columbia. He is best known for his memoir, From Potlatch to Pulpit, which was the first published book by a Tsimshian. In 1876 Crosby married Pierce to a Haida woman named Emma Leusate. In 1890 he married again, to Margaret Hargraves, an Englishwoman who was a teacher at the Methodist mission school in Port Essington. Pierce died in 1948.